Parents receive a phone call they’ve been waiting three decades for in a new trailer for Christina Choe’s “Nancy.” After appearing on the news, they hear from a woman claiming to be their child. “I think that I might be your daughter Brooke,” Nancy (Andrea Riseborough) tells them when she calls from another state. “It’s not a joke. My name’s Nancy. I think my mother may have kidnapped me 30 years ago. It’d explain a lot of things in my life.”

It’s unclear whether Nancy is Brooke or impersonating her — or if she herself knows the difference. The eerie spot suggests that Nancy may be unstable, and she is definitely full of secrets. “There are things that you don’t know — that I haven’t told you,” we see her telling someone.

Brooke’s parents (Steve Buscemi and J. Smith-Cameron) wisely hire a private investigator and order DNA tests to confirm that Nancy is indeed Brooke, but in the meantime they seem to welcome her into their family.

Choe told us she hopes that filmgoers will “raise their threshold for female characters who are morally ambiguous and complex — in the same way we are regularly entertained by male counterparts like Travis Bickle and Walter White.”

“Nancy” marks Choe’s feature debut. She’s helmed a number of shorts, including “The Queen,” “Flow,” and “I Am John Wayne.” She directed an episode of “Queen Sugar’s” upcoming third season.

“Bloodline,” “Birdman,” and “Oblivion” are among Riseborough’s previous credits.

“Nancy” hits theaters June 8.